<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      function Person() {
        // this = {}
        // this.__proto__=Person.prototype
        // return this;
      }
      const obj = new Person();
      let obj2 = new obj.constructor(); // Person.prototype.constructor===Person
    </script>
  </body>
</html>
